Find the force required to move a train of mass 5000 quintals up an incline of 1 in 50 with an acceleration `2ms^-2`. Take force of friciton = .2N/s qunital and g `= 10ms^-2`.

Find the force needed to produce an acceleration of 6 m/s2 in a ball of mass 4kg.

Find force required in accelerating a 3 kg mass at 5 m/s2 and a 4 kg mass at 4 m/s2

A seconds pendulum is suspended from the roof of a lift. If the lift is moving up with an acceleration 9.8 m/s2 its time period is

A monkey of mass 40 kg climbs on a rope (Fig. 5.20) which can stand a maximum tension of 600 N. In which of the following cases will the rope break: the monkey (a) climbs up with an acceleration of 6 m s^2 (b) climbs down with an acceleration of 4 m s^2 (c) climbs up with a uniform speed of 5 m s^1 (d) falls down the rope nearly freely under gravity? (Ignore the mass of the rope).

rocket with a lift-off mass 20,000 kg is blasted, upwards with an initial acceleration of 5.0 m s~2. Calculate the initial thrust (force) of the blast.

An object moves along a straight line with an acceleration of 2 m/s2. If its initial speed is 10 m/s, what will be its speed 2 s later?

An object moves along a straight line with an acceleration of 2 m/s2. If its initial speed is 10 m/s, what will be its speed 2 s later?

Define 1 newton force. A balloon with mass 6 kg is descending down with an acceleration 5 ms^(-2) . Calculate the mass of its contents that must be removed so that it starts moving up with the same acceleration.

A horizontal force of 5000 N is required to give a 1000 kg car an acceleration of 0.20 m/sec^-2 on a level road. How large a retarding force oppse the motion.

An object dropped from a cliff falls with a constant acceleration of 10 m/s2. Find its speed 5 s after it was dropped.