A monkey of mass 40kg 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:- climbs up with a uniform speed of `5 m s^-1``

A monkey of mass 40kg 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:- climbs down with an acceleration of 4 m s^-2

A man of mass 70 kg stands on a weighing scale in a lift which is moving :- downwards with a uniform acceleration of 5 m s^-2 ,

A boy standing on a stationary lift (open from above) throws a ball upwards with the maximum initial speed he can, equal to 49 m s^-1 . How much time does the ball take to return to his hands? If the lift starts moving up with a uniform speed of 5 m s^-1 and the boy again throws the ball up with the maximum speed he can, how long does the ball take to return to his hands ?

A horse is tied to a peg at one corner of a square shaped grass field of side 15 m by means of a 5 m long rope ( see Fig, 12. 11 ). Find (i) the area of that part of the field in which the horse can graze,(ii) the increase in the grazing area if the rope were 10 m long instead of 5 m.(Use pi=3.14 )

A man of mass 70 kg stands on a weighing scale in a lift which is moving :- upwards with a uniform speed of 10 m s^-1 , what would be the reading on scale?

A block of mass 25 kg is raised by a 50 kg man in two different ways as shown in Fig. 5.19. What is the action on the floor by the man in the two cases ? If the floor yields to a normal force of 700 N, which mode should the man adopt to lift the block without the floor yielding ?

A circus artist is climbing a 20m long rope, which is tightly stretched and tied from the top of a vertical pole to the ground. Find the height of the pole, if the angle made by the rope with the ground level is 30^@ (see fig.).