Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
A particle of mass m is moving in a circular path of constant radius r, such that it centripetal force Fr varies with time t as Fr = K^2rt^2, where k is a constant. What is the power delivered to the
03
Oct
A particle of mass m is moving in a circular path of constant radius r, such that it centripetal force Fr varies with time t as Fr = K^2rt^2, where k is a constant. What is the power delivered to the A particle of mass m is moving in a circular path of constant radius [...]
Water falling from a 50 m high fall is to be used for generating electricity energy. If 1.8 * 10^5 kg of water falls per hour and half the gravitational potential energy can be converted into electric
03
Oct
Water falling from a 50 m high fall is to be used for generating electricity energy. If 1.8 * 10^5 kg of water falls per hour and half the gravitational potential energy can be converted into electric Water falling from a 50 m high fall is to be used for generating electricity energy. If 1.8 [...]
The electric motor of a model train accelerates the train from rest to 0.620 m/s in 21.0 m/s. The total mass of the train is 875 g. Find the average power delivered to the train during the acceleration.
03
Oct
The electric motor of a model train accelerates the train from rest to 0.620 m/s in 21.0 m/s. The total mass of the train is 875 g. Find the average power delivered to the train during the acceleration. A 90 kg man runs up an escalator while it is not in operation in 10 s. [...]
A 700 N marine in basic training climbs a 10.0 m vertical rope at a constant speed in 8.00 s. What is his power output?
03
Oct
A 700 N marine in basic training climbs a 10.0 m vertical rope at a constant speed in 8.00 s. What is his power output? A 700 N marine in basic training climbs a 10.0 m vertical rope at a constant speed in 8.00 s. What is his power output? October 3, 2020 Category: Uncategorised [...]
A helicopter lifts a body of mass 100 kg to a height of 500 m at a constant speed. It takes 5 min to lift the body. Find the work done by the helicopter and the power required.
03
Oct
A helicopter lifts a body of mass 100 kg to a height of 500 m at a constant speed. It takes 5 min to lift the body. Find the work done by the helicopter and the power required. A helicopter lifts a body of mass 100 kg to a height of 500 m at a [...]
A 90 kg man runs up an escalator while it is not in operation in 10 s. What is the average power developed by the man. Suppose the escalator is running so that the escalator steps move at
03
Oct
A 90 kg man runs up an escalator while it is not in operation in 10 s. What is the average power developed by the man. Suppose the escalator is running so that the escalator steps move at A 90 kg man runs up an escalator while it is not in operation in 10 s. [...]
Two persons of equal weight are running at speeds of 4 m/s and 5 m/s, respectively. Both increases their speeds by 1 m/s in a time span of 10 s. Who does more work? Who develops more power ?
03
Oct
Two persons of equal weight are running at speeds of 4 m/s and 5 m/s, respectively. Both increases their speeds by 1 m/s in a time span of 10 s. Who does more work? Who develops more power ? respectively. Both increases their speeds by 1 m/s in a time span of 10 s. Who [...]
An elevator of total mass (elevator + passenger ) 1800 kg is moving up with a constant speed of 2 m/s. A frictional force of 4000 N opposes its motion. Determine the minimum power delivered
03
Oct
An elevator of total mass (elevator + passenger ) 1800 kg is moving up with a constant speed of 2 m/s. A frictional force of 4000 N opposes its motion. Determine the minimum power delivered An elevator of total mass (elevator + passenger ) 1800 kg is moving up with a constant speed of 2 [...]
A large family uses 8 kW of power. Direct solar energy is incident on the horizontal surface at an average rate of 200 W m/2. If 20 % of this energy can be converted to useful electrical energy,
03
Oct
A large family uses 8 kW of power. Direct solar energy is incident on the horizontal surface at an average rate of 200 W m/2. If 20 % of this energy can be converted to useful electrical energy, A large family uses 8 kW of power. Direct solar energy is incident on the horizontal surface [...]
One coolie takes 1 min to raise a box through a height of 2 m. Another one takes 30 s for the same job and does the same amount of work. Which one of the two has greater power and which one uses
03
Oct
One coolie takes 1 min to raise a box through a height of 2 m. Another one takes 30 s for the same job and does the same amount of work. Which one of the two has greater power and which one uses One coolie takes 1 min to raise a box through a height [...]