Work done from d = 0 m to d = 3 m
Water falling from a 50 m high fall is to be used for generating electric energy. If 18×10^5 kg of water falls per hour and half the gravitational potential energy can be converted into electric energy, how many 100 W lamps can be lit?
21
Oct
Water falling from a 50 m high fall is to be used for generating electric energy. If 18×10^5 kg of water falls per hour and half the gravitational potential energy can be converted into electric energy, how many 100 W lamps can be lit? Work done from d = 0 m to d = 3 [...]
A 2kg block slides on a horizontal floor with a speed of 4m/s. It strikes an uncompressed spring and compresses it till the block is motionless. The kinetic friction force is 15N and spring constant is 10,000N/m. The spring compresses by:
21
Oct
A 2kg block slides on a horizontal floor with a speed of 4m/s. It strikes an uncompressed spring and compresses it till the block is motionless. The kinetic friction force is 15N and spring constant is 10,000N/m. The spring compresses by: Work done from d = 0 m to d = 3 m October 21, [...]
A block weighing 10 kg travels down a smooth curved track AB joined to a rough horizontal surface (see the figure.) The rough surface has a friction coefficient of 0.20 with the block. If the block starts slipping on the track from a point 1 m above the horizontal surface, how far will it move on the rough surface?
21
Oct
A block weighing 10 kg travels down a smooth curved track AB joined to a rough horizontal surface (see the figure.) The rough surface has a friction coefficient of 0.20 with the block. If the block starts slipping on the track from a point 1 m above the horizontal surface, how far will it move [...]
A block of mass 100 g is moved with a speed of 5(m)/(s) at the highest point in a closed circular tube of radius 10 cm kept in a vertical plane. The cross-section of the tube is such that the block just fits in it. The block makes several oscillations inside the tube and finally stops at the lowest point. The work done by the tube on the block during the process will be
21
Oct
A block of mass 100 g is moved with a speed of 5(m)/(s) at the highest point in a closed circular tube of radius 10 cm kept in a vertical plane. The cross-section of the tube is such that the block just fits in it. The block makes several oscillations inside the tube and finally [...]
A car weighing 1400 kg is moving at speed of 54 km/h up a hill when the motor stops. If it is just able to read the destination which is at a height of 10 m above the point calculate the work done against friction (negative of the work done by the friction).
21
Oct
A car weighing 1400 kg is moving at speed of 54 km/h up a hill when the motor stops. If it is just able to read the destination which is at a height of 10 m above the point calculate the work done against friction (negative of the work done by the friction). Work done [...]
A body of mass 0.5 kg is taken up an inclined plane of length 10 m and height 5 m and then allowed to slide down to the bottom again. The coefficient of friction between the body and the plane is 0.1. The work done by the frictional force over the round trip is
21
Oct
A body of mass 0.5 kg is taken up an inclined plane of length 10 m and height 5 m and then allowed to slide down to the bottom again. The coefficient of friction between the body and the plane is 0.1. The work done by the frictional force over the round trip is Work [...]
A small block of mass m is kept on rough inclined surface of inclination θ fixed in an elevator. The elevator goes up with a uniform velocity v and the block does not slide on the wedge. The work done by the force of friction on the block in time t will be
21
Oct
A small block of mass m is kept on rough inclined surface of inclination θ fixed in an elevator. The elevator goes up with a uniform velocity v and the block does not slide on the wedge. The work done by the force of friction on the block in time t will be Work done [...]
A block of mass M is hanging over a smooth and light pulley through a light string. The other end of the string is pulled by a constant force F. If kinetic energy of the block increases by 20J in 1s. Then:
21
Oct
A block of mass M is hanging over a smooth and light pulley through a light string. The other end of the string is pulled by a constant force F. If kinetic energy of the block increases by 20J in 1s. Then: Work done from d = 0 m to d = 3 m October [...]
A block of mass m is attached to two unstretched springs of spring constant k₁ each as shown . The block is displaced towards right through a distance of x and released. Find the speed of the block as it passes through the mean position will be
21
Oct
A block of mass m is attached to two unstretched springs of spring constant k₁ each as shown . The block is displaced towards right through a distance of x and released. Find the speed of the block as it passes through the mean position will be Work done from d = 0 m to [...]
A simple pendulum of length 1m has bob of mass 100 g. It is displaced through an angle of 60^∘ from the vertical and then released. The kinetic energy of bob when it passes through the mean position is
21
Oct
A simple pendulum of length 1m has bob of mass 100 g. It is displaced through an angle of 60^∘ from the vertical and then released. The kinetic energy of bob when it passes through the mean position is Work done from d = 0 m to d = 3 m October 21, 2020 Category: [...]