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a force of 1000 N acts on a particle a force of 1000 Newton acts on a particle parallel to its direction of motion with is horizontal. Its velocity increases from 1 m/s to 10m/s, when the force act through a distance of 4 metre. calculate the mass of particle. Given a force of 10 N is necessary for overcoming friction |
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Answer» So, If we equate the FORCE we would arrive at the equation, F - F(friction) = ma F= 1000N F(friction) = 10N Now, 1000 - 10 =ma 990 = ma Now, To FIND the value of a we use the principles of kinematics, We know that, v² = u² +2as 10² = 1² +2×a×4 100 - 1 = 2×a×4 8a = 99 a= 99/8 Substituting in the above equation, 990 = m × (99/8) m= 10× 8 m= 80kg SO, The mass of the object is 80 kg |
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