Chapter 5 – Laws of Motion
Two masses m1 and m2 are accelerated uniformly on a frictionless surface as shown in figure given below. The ratio of the tensions T1/T2 is:
11
Sep
Two masses m1 and m2 are accelerated uniformly on a frictionless surface as shown in figure given below. The ratio of the tensions T1/T2 is: Two masses m1 and m2 are accelerated uniformly on a frictionless surface as shown in figure given below. The ratio of the tensions T1/T2 is: September 11, 2020 Category: Chapter [...]
A block of mass m1 lies on a smooth horizontal table and is connected to another freely hanging block of mass m2 by a light inextensible string passing over a smooth fixed pulley situated at the edge of the table as shown in the figure. Initially the system is at rest with m1 a distance d from the pulley. Then the time taken for m1 to reach the pulley is.
11
Sep
A block of mass m1 lies on a smooth horizontal table and is connected to another freely hanging block of mass m2 by a light inextensible string passing over a smooth fixed pulley situated at the edge of the table as shown in the figure. Initially the system is at rest with m1 a distance [...]
Two blocks A and B of masses 2m and m, respectively are connected by a massless and inextensible string. The whole system is suspended by a massless spring as shown in the figure. The magnitude of acceleration of A and B immediately after the string is cut, are respectively:
11
Sep
Two blocks A and B of masses 2m and m, respectively are connected by a massless and inextensible string. The whole system is suspended by a massless spring as shown in the figure. The magnitude of acceleration of A and B immediately after the string is cut, are respectively: a2 and a3 respectively. F1 and [...]
Three masses are connected as shown in figure on a horizontal frictionless surface and pulled by a force of 60 N. The tensions Tl and T2 are in the ratio.
11
Sep
Three masses are connected as shown in figure on a horizontal frictionless surface and pulled by a force of 60 N. The tensions Tl and T2 are in the ratio. Three masses are connected as shown in figure on a horizontal frictionless surface and pulled by a force of 60 N. The tensions Tl and [...]
A trolley of mass 300 kg carrying a sand bag of 25 kg is moving uniformly with a speed of 27 km/h on a frictionless track. After a while, sand starts leaking out of a hole on the floor of the trolley at the rate of 0.05 kg s^−1. What is the speed of the trolley after the entire sand bag is empty ?
11
Sep
A trolley of mass 300 kg carrying a sand bag of 25 kg is moving uniformly with a speed of 27 km/h on a frictionless track. After a while, sand starts leaking out of a hole on the floor of the trolley at the rate of 0.05 kg s^−1. What is the speed of the [...]
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A trolley of mass 300 kg carrying a sand bag of 25 kg is moving uniformly with a speed of 27 km/h on a frictionless track. After a while ,
sand starts leaking out of a hole on the floor of the trolley at the rate of 0.05 kg s^−1. What is the speed of the trolley after the entire sand bag is empty ? ,
In the figure, the blocks A, B and C of mass m each have acceleration a1, a2 and a3 respectively. F1 and F2 are external forces of magnitude 2 mg and mg respectively. Then
11
Sep
In the figure, the blocks A, B and C of mass m each have acceleration a1, a2 and a3 respectively. F1 and F2 are external forces of magnitude 2 mg and mg respectively. Then a2 and a3 respectively. F1 and F2 are external forces of magnitude 2 mg and mg respectively. Then B and C [...]
Three blocks of masses m1, m2 and m3 are connected by massless strings as shown on a frictionless table. They are pulled with a force 40 N. If m1 = 10 kg, m2 = 6 kg and m3 = 4 kg, the tension T2 will be
11
Sep
Three blocks of masses m1, m2 and m3 are connected by massless strings as shown on a frictionless table. They are pulled with a force 40 N. If m1 = 10 kg, m2 = 6 kg and m3 = 4 kg, the tension T2 will be m2 = 6 kg and m3 = 4 kg [...]
A ball of mass m is thrown upward with a velocity v. If air exerts an average resisting force F, the velocity with which the ball returns to the thrower is:
11
Sep
A ball of mass m is thrown upward with a velocity v. If air exerts an average resisting force F, the velocity with which the ball returns to the thrower is: A ball of mass m is thrown upward with a velocity v. If air exerts an average resisting force F the velocity with which [...]
The figure shows a horizontal force F acting on a block of mass M on an inclined plane (angle θ). What is the normal reaction N on the block?
11
Sep
The figure shows a horizontal force F acting on a block of mass M on an inclined plane (angle θ). What is the normal reaction N on the block? The figure shows a horizontal force F acting on a block of mass M on an inclined plane (angle θ). What is the normal reaction N [...]
A player caught a cricket ball of mass 150 g moving at a rate of 20 m/s. If the catching process is completed in 0.1 s, the force of the blow exerted by the ball on the hand of the player is equal to
11
Sep
A player caught a cricket ball of mass 150 g moving at a rate of 20 m/s. If the catching process is completed in 0.1 s, the force of the blow exerted by the ball on the hand of the player is equal to A player caught a cricket ball of mass 150 g moving [...]