Click to Chat

0120-4616500

CART 0

• 0

MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: R

There are no items in this cart.
Continue Shopping
Get instant 20% OFF on Online Material.
coupon code: MOB20 | View Course list

• Complete Physics Course - Class 11
• OFFERED PRICE: R 2,800
• View Details
Get extra R 700 off
USE CODE: SSPD25

```				   Ques1) A particle is placed at rest inside a hollow hemishere of radius R. The coefficient of friction b/w the particle and hemisphere is 1 / (3) 1/2. Show  the maximum height upto which the particle can remain stationary [1- (3) 1/2/2]R.
Ques2) A block of mass m  is paled at rest on a horizontal rough surface with the angle of friction @. The block is pulled with a force F at an angle theta with the horizontal.Show that the mmin value of F required to move the block is [mgsin@ ] / cos( theta - @).
Ques3)  A horizontal force F = mg/3 is applied on the upper surface of a uniform cube of mass m and side a which is resting on  a rough horizontal surface having coefficient of friction = 1/2.Show that the distance b/w the line of action of mg and normal reaction is a/3.
```

7 years ago

Share

```										(1)

here OM = R , to find= AM
on balancing forces we have
normal rxn. N = mg.cosx
f = mg.sinx
where f = friction coeff. * N
i.e.,
f = mgcox /31/2
so tan x = 1/31/2
so height at which particle remains stationary is Am = OM - OA = ( 1 - 31/2 /2 )R
(2)
Its solved in my previous posts asked by you
(3)

on balancing moments about centre of gravity gives:
mg*a/2 + mga/3 = mg (a/2 + x)
on solving for x gives
x=a/3
Hence,the distance b/w the line of action of mg and normal reaction is a/3.
---
Please feel free to post as many doubts on our disucssion forum as you can. If you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. We are all IITians and here to help you in your IIT JEE preparation. All the best.

Regards,
Naga Ramesh
IIT Kgp - 2005 batch

```
7 years ago

# Other Related Questions on Mechanics

WHAT IS THE DISCOVERY OF C.V.RAMAN...............................?

hi, He did eventually win the 1930 Nobel Prize in Physics "for his work on the scattering of light and for the discovery of the Raman effect". He was the first Asian and first non-white to...

 jayachandra 2 months ago

DEAR JACK, C..RAMAN DISCOVERED RAMA EFFECT.IT DEALS WITH SCATTERING OF LIGHT BY MOLECULES OF A MEDIUM WHEN THEY ARE EXCITED TO VIBRATIONAL ENERGY LEVELS.

 SAI SARDAR 2 months ago
A fighter pilot dives his plane towards the ground at 230m/s^2. He pulls out the dive on vertical circle. What is minimum radius og circle so that normal force exerted in the pilot by his...

Oops , sorry I didnt see it was a vertical circle so I didnt take into account the weight of the pilot himself. We have to keep in mind that the pilot will also exert force Mg on the seat...

 Manas Shukla one month ago

We have to equal the centripetal acceleration = 3g Since the reaction on the pilot seat = centripetal acceleration for the pilot So R = 1763.33 m

 Manas Shukla one month ago

But the answer is given 2700m ???? ?????? ???? ??????????.............................................

 Vaibhavi one month ago
the potential energy of an object of mass m moving in xy plane in a conservative field is given by U=ax+by, where x and y are position coordinates of the object. find magnitude of its...

Fx = – dU/dx = > -(a) Fy = – dU/dy => -(b) maccln.x = -(a) or accln.x = -a/m and maccln.y = -(b) or accln.y = -b/m Net accln. = root((a/m)^2 + (b/m)^2)

 Vikas TU 8 days ago
What is harmonic series?give a small expression????????????????????

Gowri sankar, The harmonic series the divergent infinite series.It names derive from the concepts of overtones.

 SAI SARDAR 9 months ago

Hello Gowri A harmonic series is the sequence of sounds where the base frequency of each sound is an integral multiple of the lowest base frequency. Pitched musical instruments are often...

dear gowri harmonic series the divergent infinate series whose name was derived from the concepts of overtonees.the set of frequencies consisting of fundamental and the harmonics realated...

 sudarshan 9 months ago
a plane mirror is moving with a velocity of 2i+3j+4k. if normal to the plane is along z axis, what is the velocity of image?

velocity of mirror = (velocity of object + velocity of image)/2 Or velocity of image = 2vm – vo = 2(2i + 3j + 4k) – (k) = 4i + 6j + 8k – k = 4i + 6j + 7k

velocity of mirror = (velocity of object + velocity of image)/2 Or velocity of image = 2vm – vo = 2(2i + 3j + 4k) – (k) = 4i + 6j + 8k – k = 4i + 6j + 7k

 Vikas TU 22 days ago
what is chare of electron?

The electron is a subatomic particle, symbol e− or β−, with a negative elementary electric charge . Electrons belong to the first generation of the lepton particle family, and are generally ...

 SHANMUKESHWAR one year ago

The electron is a subatomic particle, symbol e− or β−, with a negative elementary electric charge. Electrons belong to the first generation of the lepton particle family, and are generally...

 KUNCHAM SAMPATH one year ago

charge of electron is 1.60217657 × 10 -19 coulombs

 bollusrinivas one year ago
View all Questions »

• Complete Physics Course - Class 12
• OFFERED PRICE: R 2,600
• View Details
Get extra R 650 off
USE CODE: SSPD25

• Complete Physics Course - Class 11
• OFFERED PRICE: R 2,800
• View Details

Get extra R 700 off
USE CODE: SSPD25

More Questions On Mechanics