Learn to Create a Robotic Device Using Arduino in the Free Webinar. Register Now
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
Free webinar on Robotics (Block Chain) Learn to create a Robotic Device Using Arduino
30th Jan @ 5:00PM for Grade 1 to 10
A woman stands on a spring scale in an elevator, In which of the following cases will the scale record the minimum reading: (a) elevator stationary; (b) elevator cable breaks, free fail; (c) elevator accelerating upward; (d) elevator accelerating downward; (e) elevator moving at constant velocity? In which will it record the maximum reading? A woman stands on a spring scale in an elevator, In which of the following cases will the scale record the minimum reading: (a) elevator stationary; (b) elevator cable breaks, free fail; (c) elevator accelerating upward; (d) elevator accelerating downward; (e) elevator moving at constant velocity? In which will it record the maximum reading?
Min reading will be recorded in case of b
Min reading will be recorded in case of (b)free fall.Max reading when elevator accelerates upwards (c)
A weight hangs by a spring scale from the ceiling of an elevator. The weight of the object will act in the downward direction. As the elevator accelerating in upward direction, the tension acting on the body which hangs by a spring scale from the ceiling will be greater than the weight of the body. This tension will show in the reading of the spring scale and that will be greatest. This condition is equivalent to the elevator is descending with decreasing speed. Therefore the reading of the spring scale will be greatest (c) when the elevator descending with decreasing speed.As the elevator descending with increasing speed, the weight of the body will be greater than the tension acting on the body. This tension will show in the reading of the spring scale and that will be least. Therefore the reading of the spring scale will be least (d) when the elevator descending with increasing speed.
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -