Part 1
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 block of mass 1 kg is placed at the point A of a rough track shown in the figure. If slightly pushed towards right, it stops at the point B of the track. The work done by the frictional force on the block during its transit from A to B is
21
Oct
A block of mass 1 kg is placed at the point A of a rough track shown in the figure. If slightly pushed towards right, it stops at the point B of the track. The work done by the frictional force on the block during its transit from A to B is A block of [...]
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 car is moving along a straight horizontal road with a speed v0 . If the coefficient of friction between the tyres and the road is μ, the distance traveled by the car before it comes to is?
21
Oct
A car is moving along a straight horizontal road with a speed v0 . If the coefficient of friction between the tyres and the road is μ, the distance traveled by the car before it comes to is? A car is moving along a straight horizontal road with a speed v0. If the coefficient of [...]
A bullet moving with a speed of 100 ms^−1 can just penetrate two planks of equal thickness. Then the number of such planks penetrated by the same bullet when the speed is doubled will be:
21
Oct
A bullet moving with a speed of 100 ms^−1 can just penetrate two planks of equal thickness. Then the number of such planks penetrated by the same bullet when the speed is doubled will be: A bullet moving with a speed of 100 ms^−1 can just penetrate two planks of equal thickness. Then the number [...]
A ball dropped from a height of 2m rebounds to a height of 1.5m after hitting the ground. Then the % of energy lost is
21
Oct
A ball dropped from a height of 2m rebounds to a height of 1.5m after hitting the ground. Then the % of energy lost is A ball dropped from a height of 2m rebounds to a height of 1.5m after hitting the ground. Then the % of energy lost is October 21, 2020 Category: Cengage [...]
A bullet, moving with a speed of 150(m)/(s), strikes a wooden plank. After passing through the plank, its speed becomes 125(m)/(s). Another bullet of the same mass and size strikes the plank with a speed of 90(m)/(s). Its speed after passing through the plank would be
21
Oct
A bullet, moving with a speed of 150(m)/(s), strikes a wooden plank. After passing through the plank, its speed becomes 125(m)/(s). Another bullet of the same mass and size strikes the plank with a speed of 90(m)/(s). Its speed after passing through the plank would be A bullet its speed becomes 125(m)/(s). Another bullet of [...]
A ball is thrown vertically upward with speed 10m/s and it returns to the ground with speed 8m/s. There exists a constant air resistance. The minimum height attained by the ball will be
21
Oct
A ball is thrown vertically upward with speed 10m/s and it returns to the ground with speed 8m/s. There exists a constant air resistance. The minimum height attained by the ball will be A ball is thrown vertically upward with speed 10m/s and it returns to the ground with speed 8m/s. There exists a constant [...]
A body dropped from a height H reaches the ground with a speed of 1.2 gH−−−√. Calculate the work done by air friction.
21
Oct
A body dropped from a height H reaches the ground with a speed of 1.2 gH−−−√. Calculate the work done by air friction. A body dropped from a height H reaches the ground with a speed of 1.2 gH−−−√. Calculate the work done by air friction. October 21, 2020 Category: Cengage NEET by C.P Singh [...]
A body of mass 1kg is thrown upwards with a velocity 20ms^−1. It momentarily comes to rest after attaining a height of 18m. How much energy is lost due to air friction? (g=10ms^−2)
21
Oct
A body of mass 1kg is thrown upwards with a velocity 20ms^−1. It momentarily comes to rest after attaining a height of 18m. How much energy is lost due to air friction? (g=10ms^−2) A body of mass 1kg is thrown upwards with a velocity 20ms^−1. It momentarily comes to rest after attaining a height of [...]