Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

An elevator is descending with uniform acceleration. To measure the acceleration, a person in the elevator drops a coin at the moment the elevator starts. The coin is 6ft above the floor of the elevator at the time it is dropped. The person observes that the coin strikes the floor in 1 second. Calculate from these data the acceleration of the elevator.

An elevator is descending with uniform acceleration. To measure the acceleration, a person in the elevator drops a coin at the moment the elevator starts. The coin is 6ft above the floor of the elevator at the time it is dropped. The person observes that the coin strikes the floor in 1 second. Calculate from these data the acceleration of the elevator.

Grade:upto college level

1 Answers

Deepak Patra
askIITians Faculty 471 Points
7 years ago
Sol. For elevator and coin u = 0 As the elevator descends downward with acceleration a’ (say) The coin has to move more distance than 1.8 m to strike the floor. Time taken t = 1 sec. Sc = ut+ ½ a’t2 = 0 + ½ g (1)2 = ½ g Se = ut+ ½ at2 u + ½ a (1)2 = 1/a2 a Total distance covered by coin is given by = 1.8 + 1/2 a = 1/2 g ⇒ 1.8 +a/2 = 9.8/2 = 4.9 ⇒ a = 6.2 m/s2 = 6.2 × 3.28 = 20.34 ft/s2.

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free