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A 5000 kg rocket is set for vertical firing. The exhaust speed is 800 ms^−1. To give an upward acceleration of 20 m/s^2, the amount of gas ejected per second to supply the needed thrust is (g=10 ms^−2)
24
Aug
A 5000 kg rocket is set for vertical firing. The exhaust speed is 800 ms^−1. To give an upward acceleration of 20 m/s^2, the amount of gas ejected per second to supply the needed thrust is (g=10 ms^−2) A 5000 kg rocket is set for vertical firing. The exhaust speed is 800 ms^−1. To give [...]
The force on a rocket moving with a velocity of 300 m/s is 210 N. The rate of consumption of fuel of rocket is
24
Aug
The force on a rocket moving with a velocity of 300 m/s is 210 N. The rate of consumption of fuel of rocket is The force on a rocket moving with a velocity of 300 m/s is 210 N. The rate of consumption of fuel of rocket is August 24, 2020 Category: Chapter 3 - [...]
If body travels half of its path in the last second of its fall from rest, find the time and height of its fall.
24
Aug
If body travels half of its path in the last second of its fall from rest, find the time and height of its fall. find the time and height of its fall. If body travels half of its path in the last second of its fall from rest August 24, 2020 Category: Uncategorised (JEE Advanced [...]
An object of mass 3 kg is at rest. If a force of F = (6t^2 i^ + 4t j^) is applied on the object then velocity of object at t = 3 second is : –
24
Aug
An object of mass 3 kg is at rest. If a force of F = (6t^2 i^ + 4t j^) is applied on the object then velocity of object at t = 3 second is : – An object of mass 3 kg is at rest. If a force of F = (6t^2 i^ + [...]
A lift of mass 1000kg is moving upwards with an acceleration of 1 m/s^2. The tension developed in the string, which is connected to the lift is.
24
Aug
A lift of mass 1000kg is moving upwards with an acceleration of 1 m/s^2. The tension developed in the string, which is connected to the lift is. A lift of mass 1000kg is moving upwards with an acceleration of 1 m/s^2. The tension developed in the string which is connected to the lift is. August [...]
A block of mass m is placed on a smooth wedge of inclination θ. The whole system is accelerated horizontally so that block does not slip on the wedge. The force exerted by the wedge on the block has a will be
24
Aug
A block of mass m is placed on a smooth wedge of inclination θ. The whole system is accelerated horizontally so that block does not slip on the wedge. The force exerted by the wedge on the block has a will be connected of an in extensible string over a frictionless pulley shown. when masses [...]
A piece of stone is allowed to fall from a balloon floating in air. It goes down past a tower 30 m in height in the last quarter of the last second of its flight.Find the height of the stone at the instant when it was dropped and its velocity as it reaches the ground. (g=9.8ms−2)
24
Aug
A piece of stone is allowed to fall from a balloon floating in air. It goes down past a tower 30 m in height in the last quarter of the last second of its flight.Find the height of the stone at the instant when it was dropped and its velocity as it reaches the ground. [...]
A monkey is descending from the branch of a tree with a constant acceleration. If the breaking strength of the branch is 75% of the weight of the monkey, the minimum acceleration with which the monkey can slide down without breaking the branch is
24
Aug
A monkey is descending from the branch of a tree with a constant acceleration. If the breaking strength of the branch is 75% of the weight of the monkey, the minimum acceleration with which the monkey can slide down without breaking the branch is A monkey is descending from the branch of a tree with [...]
A piece of stone is allowed to fall from a balloon floating in air. It goes down past a tower 30 m in height in the last quarter of the last second of its flight.Find the height of the stone at the instant when it was dropped and its velocity as it reaches the ground. (g=9.8ms−2)
24
Aug
A piece of stone is allowed to fall from a balloon floating in air. It goes down past a tower 30 m in height in the last quarter of the last second of its flight.Find the height of the stone at the instant when it was dropped and its velocity as it reaches the ground. [...]
Two masses m1 = 5 kg and m2 = 10 kg, connected of an in extensible string over a frictionless pulley shown. when masses are released,then acceleration of masses will be
24
Aug
Two masses m1 = 5 kg and m2 = 10 kg, connected of an in extensible string over a frictionless pulley shown. when masses are released,then acceleration of masses will be connected of an in extensible string over a frictionless pulley shown. when masses are released then acceleration of masses will be Two masses m1=5 [...]