Grade 12th passMechanics

the velocity of a ship in still water is 20 km/h . what is the velocity of a motor boat approaching the ship at right angles to its course if it appears to people on board ship heads towards the ship at 60 degree

Karan Dixit

9 Years agoGrade 12th pass

1 Answer

Shaswata Biswas

9 Years ago

The angle of the resultant with the ship comes to be 60`. If Vs is the velocity of the ship and Vb is the velocity of the boat, the tan60` = Vbsin90`÷(Vs-Vbcos90`). Since the angle between Vb & Vs is 90. On solving Vb = 20root3 = 34.64 m/s

Three identical balls are placed on a frictionless horizontal surface touching each other. They stick to each other because of adhesive. Another ball of same radius and mass m is placed over the void created by the three balls. Find the forces applied by the balls kept on the floor to each other if the system remains in equilibrium.

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Last Activity: 10 Months ago

A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.

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mechanics

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Last Activity: 10 Months ago

A metal strip clamped at one end vibrates with a frequency of 20 Hz and amplitude of 5 mm
at the free end, where a small mass of 2 g is positioned. determine
(i) The velocity of the end when passing through the zero position
(ii) The acceleration at maximum displacement
(iii) The maximum kinetic energy of the mass

mechanics

2 Answers Available

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An object of mass m = 0.25 kg oscillates in a fluid at the end of a vertical spring of spring
constant kH = 85 N/m, see Fig.1. The effect of the fluid resistance is governed by the
damping constant b = 0.07kg/s.
(i) Find the period of the damped oscillation.
(ii) By what percentage does the amplitude of the oscillation decrease in each cycle?

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If a=x² find the displacement at t =3sec if body velocity at t= 0 sec is 0

mechanics

1 Answer Available

Last Activity: 3 Years ago

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the velocity of a ship in still water is 20 km/h . what is the velocity of a motor boat approaching the ship at right angles to its course if it appears to people on board ship heads towards the ship at 60 degree

Karan Dixit

1 Answer

Shaswata Biswas

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A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.11213141

If a=x² find the displacement at t =3sec if body velocity at t= 0 sec is 0

A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.

11
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41