Q141
Open questionEnergy possessed by a body due to its motion is known by what name?
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Physics GK · all questionsWork, Energy and Power
Work, Energy and Power
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Q142
Open questionFalling coconut has-
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Q143
Open questionConsider the following statements.
1. There is no net moment on a body which is in equilibrium.
2. The momentum of a body is always conserved.
3. The kinetic energy of an object is always conserved.
Which of the statements (s) given above is/are correct?
1. There is no net moment on a body which is in equilibrium.
2. The momentum of a body is always conserved.
3. The kinetic energy of an object is always conserved.
Which of the statements (s) given above is/are correct?
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Q144
Open questionIf a man do 'W' work in 't' time, then his power 'P' will be-
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Q145
Open questionWhich of the following is the electric power's formula?
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Q146
Open questionFind the potential energy of an object 3m mass raised from the ground at a height of h-
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Q147
Open questionIf force F = 0, then work done W = ?
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Q148
Open questionA boy of 50 kg mass climbs 45 stairs in 9 seconds. If the height of each stair is 15cm, then calculate his power. (g= 10ms-2)
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Q149
Open questionFormula of power is -
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Q150
Open questionWhich of the following increase or decrease with height?
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Q151
Open questionWhich of the following is not an effect of unbalanced force applied to an object?
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Q152
Open questionIf displacement is horizontal to the applied force, then work done is-
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Q153
Open questionWhat is represented by the product of force with displacement in the direction of force?
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Q154
Open questionIf the work done is zero, then the angle between force and displacement is-
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Q155
Open questionAn object is dropped from a certain height to the ground. When it touches the ground it will contain-
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Q156
Open questionIf a body is whirled in a circle the work done on it . . . . . . . .
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Q157
Open questionWhen a man pushes a wall but fails to displace it, it does?
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Q158
Open questionIf momentum (p) and velocity (v) are given, the formula used to find mass (m) will be:
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Q159
Open questionWhich of the following quantity measures the inertia of a body?
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Q160
Open questionDensity of pure water is . . . . . . . . that of saline water.
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