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qUESTIONS

11th-mht

A weightless thread can support tension up to 30 N. A stone of mass 0.5 kg is tied to it and is revolved in a circular path of radius 2 m in a vertical plane. If g = 10 ms^2, then the maximum angular velocity of the stone will be

11th-mht

A body is moving in a circular path with acceleration a. If its speed gets doubled, find the ratio of centripetal acceleration after and before the speed is

11th-mht

In uniform circular motion if the speed of a body and radius of the path are both doubled then the centripetal force will be

11th-mht

A body moves 6m north, 8m east, and 10m vertically upwards, what is its resultant displacement from the initial position

11th-mht

An airplane flies 400 m north and 300 m south and then flies 1200 m upwards then net displacement is:

11th-mht

The numerical ratio of average velocity to average speed is equal to

11th-mht

A body of mass (m) moving along a straight line covers half the distance with a speed of 2 m/s^-1. The remaining half of the distance is covered in two equal time intervals with a speed of 6 m/s^-1 and 5 m/s^−1 respectively. The average speed of the particle for the entire journey is.

11th-mht

The displacement time graph for two particles A and B are straight lines inclined at angles of 30 degree and 60 degree with the time axis. The ratio of velocities of VA:VB

11th-mht

A bird flies for 4 s with a velocity of |t−2| m/s^-1 in a straight line, Where t= time in seconds. It covers a distance of

11th-mht

An athlete completes one round of a circular track of radius R in 40 sec. What will be the magnitude of displacement at the end of 2 min 20 sec?

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