How much work is done on a table if it has a force of 20 newtons and I move it 5 meters?
Thus we get, W = 40 × cos(0°) = 40 × 1 = 40J. Hence, the work done is 40J (40 Joules). A force of 20 N is pushing an object 5 m in the direction of the force.
What will be the potential energy of a body of mass 2.5 kg kept at a height of 5 Metre?
U=25/10×10×=375j.
What will be the potential energy of a body of mass 1 kg kept at a height of 5 Metre?
If acceleration due to gravity is 10m/s2, what will be the potential energy of a body of mass 1 kg kept at a height of 5 m? Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams. Thus, the potential energy of the body is 50 joules.
What will be the potential energy of a body of mass 1 kg kept at a height of 500 cm?
Hence potential energy is 50Joule.
What is the potential energy of a body of mass 1 kg kept at a height of 1 Metre?
The potential energy of a body of mass 1kg kept at a height of 1m is 1J.
What is the potential energy of a stone of mass 10 kg that is lifted to a height of 10 m if G 10 N kg?
In the formula, m is mass, g represents acceleration due to gravity and h refers to height. Potential energy – 800 J. Hence, the potential energy of a stone is 800 J.
What is the potential energy of a stone of mass 20g lifted to a height of 15m if G 10n kg?
Therefore, the potential energy of the stone is 800 J.
What will be the kinetic energy of a body at rest?
The kinetic energy of a body with mass m moving at a velocity v is one half the product of the mass of the body and the square of its velocity, i.e., KE = 1⁄2mv2. Even when a body appears to be at rest, its atoms and molecules are in constant motion and thus have kinetic energy.
What is potential energy derive its expression?
W=mgh.
What is the expression of potential energy Class 9?
Expression for Potential Energy The potential energy (Ep) is equal to the work done over an object of mass ‘m’ to raise it by a height ‘h’. Thus, Ep = mgh, where g = acceleration due to gravity.
What will be the kinetic energy of a body when its velocity is doubled?
Answer. If velocity is doubled, Kinetic Energy increases by 4 times. Kinetic energy of a body is the energy possessed by it, by virtue of its motion, i.e. if the body is moving it will always have kinetic energy.
Is there kinetic energy at rest?
Expand. If kinetic energy is the energy of motion then, naturally, the kinetic energy of an object at rest should be zero.
Is kinetic energy a form of mechanical energy?
Mechanical energy is the energy that is possessed by an object due to its motion or due to its position. Mechanical energy can be either kinetic energy (energy of motion) or potential energy (stored energy of position). A moving car possesses mechanical energy due to its motion (kinetic energy).