Chapter 6 – Work, Energy and Power
The momentum of a body is increased by 25%. The kinetic energy is increased by about
27
Nov
The momentum of a body is increased by 25%. The kinetic energy is increased by about The momentum of a body is increased by 25%. The kinetic energy is increased by about November 27, 2020 Category: Chapter 6 - Work, Energy and Power , MTG NEET Physics , Part 1 ,
Potential energy and position for a conservative force are plotted in graph shown. Then force position graph can be
27
Nov
Potential energy and position for a conservative force are plotted in graph shown. Then force position graph can be Potential energy and position for a conservative force are plotted in graph shown. Then force position graph can be November 27, 2020 Category: Chapter 6 - Work, Energy and Power , MTG NEET Physics , Part [...]
A car starts from rest and moves on a surface in which the coefficient of friction between the road and the tyres increases linearly with distance (x). The car moves with the maximum possible acceleration. The kinetic energy (E) of the car will depend on x as
27
Nov
A car starts from rest and moves on a surface in which the coefficient of friction between the road and the tyres increases linearly with distance (x). The car moves with the maximum possible acceleration. The kinetic energy (E) of the car will depend on x as A block of mass m starting from rest [...]
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A block of mass m starting from rest slides down a smooth inclined plane of gradient θ ,
fixed in a lift moving upwards with an acceleration a0 as shown in figure. If the base of the inclined plane has length L ,
the time taken by the block to slide from top to bottom of the inclined plane ,
will be ,
Two particles having position vectors r1 = 3i + 5j m and r2 = -5i – 3j m are moving with velocities v1 = 4i + 3j m/s and v2 = ai + 7j m/s. If they collide after 2 seconds, the value of a is
28
Oct
Two particles having position vectors r1 = 3i + 5j m and r2 = -5i – 3j m are moving with velocities v1 = 4i + 3j m/s and v2 = ai + 7j m/s. If they collide after 2 seconds, the value of a is the value of a is Two particles having position [...]
A 10 kg object collides with a stationary 5 kg object and after collision they stick together and move forward with a velocity of 4 ms. What is the velocity with which the 10 kg object hits the second one ?
28
Oct
A 10 kg object collides with a stationary 5 kg object and after collision they stick together and move forward with a velocity of 4 ms. What is the velocity with which the 10 kg object hits the second one ? The elastic energy stored in the spring in the equilibrium position of block is [...]
A particle of mass 0.1 kg moving with an initial speed v collides with another particle of same mass kept at rest. If after collision the total energy becomes 0.2 J, then:
28
Oct
A particle of mass 0.1 kg moving with an initial speed v collides with another particle of same mass kept at rest. If after collision the total energy becomes 0.2 J, then: A particle of mass 0.1 kg moving with an initial speed v collides with another particle of same mass kept at rest. If [...]
A light particle moving horizontally with a speed of 12 m/s strikes a very heavy block moving in the same direction at 10 m/s. The collision is one dimensional and elastic. After the collision, the particle will be
28
Oct
A light particle moving horizontally with a speed of 12 m/s strikes a very heavy block moving in the same direction at 10 m/s. The collision is one dimensional and elastic. After the collision, the particle will be A light particle moving horizontally with a speed of 12 m/s strikes a very heavy block moving [...]
A ball is dropped on to a horizontal plate from a height h = 9 m above it. If the coefficient of restitution is e = 1/2, the total distance travelled before the ball comes to rest is
28
Oct
A ball is dropped on to a horizontal plate from a height h = 9 m above it. If the coefficient of restitution is e = 1/2, the total distance travelled before the ball comes to rest is A ball is dropped on to a horizontal plate from a height h = 9 m above [...]
The speed v reached by a car of mass m in travelling a distance x, driven with constant power p, is given by
28
Oct
The speed v reached by a car of mass m in travelling a distance x, driven with constant power p, is given by driven with constant power P is given by The speed v reached by a car of mass m in travelling a distance x October 28, 2020 Category: Chapter 6 - Work, Energy [...]
A toy gun uses a spring of very large value of force constant k . Before triggered in the upward direction, the spring is compressed by a small distance x. If mass of shot is m on being triggered it will go up to a maximum height of:
28
Oct
A toy gun uses a spring of very large value of force constant k . Before triggered in the upward direction, the spring is compressed by a small distance x. If mass of shot is m on being triggered it will go up to a maximum height of: A toy gun uses a spring of [...]