UHS Mdcat 2024 Solved With Explanation | mosaicbro.com
UHS Mdcat 2024 Solved With Explanation
Past Mdcat Paper of UHS 2024
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134
An air craft makes a turn in a horizontal circle of radius 100m. It is travelling with a velocity of 250m/sec. The angular velocity of the air craft will be:
Correct Answer:B
Explanation:
Angular velocity ω = v/r = 250 m/s / 100 m = 2.5 rad/s.
135
A particle of mass 'm' is moving on a circular path of radius 'r' with velocity 'v', then centripetal force acting on it is F. If the velocity of particle increases by 2 times and radius of circular path increases by 4 times then new centripetal force F' will be:
Correct Answer:D
Explanation:
Centripetal force F = mv²/r. If v becomes 2v and r becomes 4r, F' = m(2v)²/(4r) = (4mv²)/(4r) = mv²/r = F.
136
A roller coaster is moving with 30 ms⁻¹ on a circular track of radius 30m. the net mass of coaster + passengers is 'm' the centripetal force acting on it is:
Correct Answer:D
Explanation:
Centripetal force F = mv²/r = m(30)²/30 = 30m N.
137
Amplitude in the following figure is given as:
Correct Answer:D
Explanation:
Amplitude is the maximum displacement from the equilibrium position, which is 1m in this case.