The earth is acted upon by gravitation of Sun, even though it does not fall into the Sun. Why?
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A body is acted upon by balanced forces:
When the forces acting on an object are balanced, the object is either at rest or moving with uniform velocity.
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Even though a very few cells in a C4 plant carry out the biosynthetic – Calvin pathway, yet they are highly productive. Can you discuss why?
The productivity of a plant is measured by the rate at which it photosynthesises. The amount of carbon dioxide present in a plant is directly proportional to the rate of...
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Why does moon have very cold and very hot temperature variations even though it is at the same distance from the sun as the earth is?
There is absence of atmosphere on the moon,so no part of heat remains trapped in its atmosphere. That is why in day time moon gets hot and in night it cools...
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How does the force of gravitation between two objects change when the distance between them is reduced to half?
According to the universal law of gravitation, gravitational force (F) acting between two objects is inversely proportional to the square of the distance (r) between them, i.e., f ∝ 1 /...
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If the moon attracts the earth, why does the earth not move towards the moon?
The Earth and the moon experience equal gravitational forces from each other. However, the mass of the Earth is much larger than the mass of the moon. Hence, it accelerates...
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Calculate the force of gravitation between the earth and the Sun, given that the mass of the earth
According to the universal law of gravitation, the force of attraction between the Earth and the Sun is given by = ( × × ℎ) / 2 Where, MSun = Mass of...
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A particle is acted upon by a force of constant magnitude.
c) : No work is done when a force of constant magnitude always acts at right angles to the velocity of a particle when the motion of the particle takes...
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A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the
(c) its kinetic energy is constant (d) it moves in a circular path. Explanation: Since the force is always perpendicular to the velocity, it means there is no displacement in the direction of...
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A body rotating at 20 rad/s is acted upon by a constant torque providing it a deceleration of 2 rad/s ^2.
Initial angular velocity = 20 rad/s Therefore α = 2 rad/s2 t1 = ω/α 1 = 20/2 = 10 sec Therefore 10 sec it will come to rest. Since the same torque continues to act...
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A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle.
(c) its kinetic energy is constant (d) it moves in a circular path. Explanation: Since the force is always perpendicular to the velocity, it means there is no displacement in the direction of...
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