help@askiitians.com

+91-87964 74404

Grade 12General Physics

A BALL OF MASS 100g and having a charge of 4010^-5 is relesed from rest in aregion where horizontal E.F of 210^4 N/C exists. a)find the resulting force acting on the ball. b) whay will be the path of the ball C) where will be the ball at the end of 2seconds

munnuri ratnakumar

13 Years agoGrade 12

1 Answer

Apoorva Arora

12 Years ago

There will ne a vertical force acting downwards = mg=1 newton

and one horizontal force towards the right, say, = Eq= 8 newton

so the resultant force is

$F_{net}=\sqrt{F_{1}^{2}+F_{2}^{2}+2F_{1}F_{2}cos\theta }=\sqrt{65}newton$

and the angle made by the resultant force will be $cos^{-1}\frac{1}{8}$

and hence it will move along a straight line with an angle of 82.8 degrees with the vertical

So after 2 seconds

$x=\frac{1}{2}\frac{F}{m}2^{2}$ = 160 m

and

$y=\frac{1}{2}\frac{F}{m}2^{2}$ =20 m

assuming that the origin is the position of ball at t=0 and the x axis increases towards the right and y axis increases towards the downward direction.

Thanks and Regards

Apoorva Arora

IIT Roorkee

askIITians Faculty

In viewing through a magnifying glass, one usually positions one's eyes very close to the lens. Does angular magnification change if the eye is moved back?

general physics

1 Answer Available

Last Activity: 9 Months ago

moment of inertia of a equilateral triangle about an axis passing through centre and perppendicular to the plane

general physics

1 Answer Available

Last Activity: 3 Years ago

. Because of the rotation of the earth, a plumb bob may not hang exactly along the direction of
the earth’s gravitational pull (its weight) but deviates slightly from this direction. Calculate the
deviation (a) at 40 latitude, (b) at the poles, and (c) at the equator

general physics

1 Answer Available

Last Activity: 3 Years ago

The length of a massless rod is measured using vernier callipers having 10 vernier scale divisions and least count of 0.1 mm. Two masses 1.00 ± 0.01 kg and 4.00 ± 0.02 kg are attached to its ends. If reading of vernier scale is 5 divisions coinciding with 1.3 cm, what is the % error in locating centre of mass from lighter mass

general physics

2 Answers Available

Last Activity: 3 Years ago

A block is kept on x-y plane at a point (2m,3m). It is pushed with a force of magnitude 10 Ntowards point (5m,7m). The force can be represented as?

general physics

1 Answer Available

Last Activity: 3 Years ago

View all Questions