The Work-Energy Theorem for a Constant/Variable Force
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PHXI06:WORK ENERGY AND POWER

355643 A body of mass 10 \(kg\) initially at rest acquires velocity 10 \(m/s\). What is the work done ?

1 \(500\,J\)
2 \( - 500\,J\)
3 \( - 50\,J\)
4 \(50\,J\)
PHXI06:WORK ENERGY AND POWER

355644 The trolley starts accelerating with acceleration \(a\). The maximum angle deflected by thread from vertical will be:
supporting img

1 \(\tan ^{-1}\left(\dfrac{a}{2 g}\right)\)
2 \(2 \tan ^{-1}\left(\dfrac{a}{g}\right)\)
3 \(\tan ^{-1}\left(\dfrac{2 a}{g}\right)\)
4 \(\tan ^{-1}\left(\dfrac{a}{g}\right)\)
PHXI06:WORK ENERGY AND POWER

355645 For the situation shown in the given figure, block \({A}\) of mass \(10\,kg\) is at the ground. The block \({B}\) is released from rest when the light spring is unstretched. The minimum mass of the block \({B}\) in \(kg\) such that block \({B}\) may leave the contact of ground is
supporting img

1 \(1\,kg\)
2 \(5\,kg\)
3 \(9\,kg\)
4 \(2\,kg\)
PHXI06:WORK ENERGY AND POWER

355646 A body of mass 5 kg falls from a height of 30 \(m\) . If whole of its mechanical energy is changed into heat, then heat produced will be

1 \(1400\,cal\)
2 \(700\,cal\)
3 \(350\,cal\)
4 \(175\,cal\)
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PHXI06:WORK ENERGY AND POWER

355643 A body of mass 10 \(kg\) initially at rest acquires velocity 10 \(m/s\). What is the work done ?

1 \(500\,J\)
2 \( - 500\,J\)
3 \( - 50\,J\)
4 \(50\,J\)
PHXI06:WORK ENERGY AND POWER

355644 The trolley starts accelerating with acceleration \(a\). The maximum angle deflected by thread from vertical will be:
supporting img

1 \(\tan ^{-1}\left(\dfrac{a}{2 g}\right)\)
2 \(2 \tan ^{-1}\left(\dfrac{a}{g}\right)\)
3 \(\tan ^{-1}\left(\dfrac{2 a}{g}\right)\)
4 \(\tan ^{-1}\left(\dfrac{a}{g}\right)\)
PHXI06:WORK ENERGY AND POWER

355645 For the situation shown in the given figure, block \({A}\) of mass \(10\,kg\) is at the ground. The block \({B}\) is released from rest when the light spring is unstretched. The minimum mass of the block \({B}\) in \(kg\) such that block \({B}\) may leave the contact of ground is
supporting img

1 \(1\,kg\)
2 \(5\,kg\)
3 \(9\,kg\)
4 \(2\,kg\)
PHXI06:WORK ENERGY AND POWER

355646 A body of mass 5 kg falls from a height of 30 \(m\) . If whole of its mechanical energy is changed into heat, then heat produced will be

1 \(1400\,cal\)
2 \(700\,cal\)
3 \(350\,cal\)
4 \(175\,cal\)
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PHXI06:WORK ENERGY AND POWER

355643 A body of mass 10 \(kg\) initially at rest acquires velocity 10 \(m/s\). What is the work done ?

1 \(500\,J\)
2 \( - 500\,J\)
3 \( - 50\,J\)
4 \(50\,J\)
PHXI06:WORK ENERGY AND POWER

355644 The trolley starts accelerating with acceleration \(a\). The maximum angle deflected by thread from vertical will be:
supporting img

1 \(\tan ^{-1}\left(\dfrac{a}{2 g}\right)\)
2 \(2 \tan ^{-1}\left(\dfrac{a}{g}\right)\)
3 \(\tan ^{-1}\left(\dfrac{2 a}{g}\right)\)
4 \(\tan ^{-1}\left(\dfrac{a}{g}\right)\)
PHXI06:WORK ENERGY AND POWER

355645 For the situation shown in the given figure, block \({A}\) of mass \(10\,kg\) is at the ground. The block \({B}\) is released from rest when the light spring is unstretched. The minimum mass of the block \({B}\) in \(kg\) such that block \({B}\) may leave the contact of ground is
supporting img

1 \(1\,kg\)
2 \(5\,kg\)
3 \(9\,kg\)
4 \(2\,kg\)
PHXI06:WORK ENERGY AND POWER

355646 A body of mass 5 kg falls from a height of 30 \(m\) . If whole of its mechanical energy is changed into heat, then heat produced will be

1 \(1400\,cal\)
2 \(700\,cal\)
3 \(350\,cal\)
4 \(175\,cal\)
For More Updates join with Us
PHXI06:WORK ENERGY AND POWER

355643 A body of mass 10 \(kg\) initially at rest acquires velocity 10 \(m/s\). What is the work done ?

1 \(500\,J\)
2 \( - 500\,J\)
3 \( - 50\,J\)
4 \(50\,J\)
PHXI06:WORK ENERGY AND POWER

355644 The trolley starts accelerating with acceleration \(a\). The maximum angle deflected by thread from vertical will be:
supporting img

1 \(\tan ^{-1}\left(\dfrac{a}{2 g}\right)\)
2 \(2 \tan ^{-1}\left(\dfrac{a}{g}\right)\)
3 \(\tan ^{-1}\left(\dfrac{2 a}{g}\right)\)
4 \(\tan ^{-1}\left(\dfrac{a}{g}\right)\)
PHXI06:WORK ENERGY AND POWER

355645 For the situation shown in the given figure, block \({A}\) of mass \(10\,kg\) is at the ground. The block \({B}\) is released from rest when the light spring is unstretched. The minimum mass of the block \({B}\) in \(kg\) such that block \({B}\) may leave the contact of ground is
supporting img

1 \(1\,kg\)
2 \(5\,kg\)
3 \(9\,kg\)
4 \(2\,kg\)
PHXI06:WORK ENERGY AND POWER

355646 A body of mass 5 kg falls from a height of 30 \(m\) . If whole of its mechanical energy is changed into heat, then heat produced will be

1 \(1400\,cal\)
2 \(700\,cal\)
3 \(350\,cal\)
4 \(175\,cal\)