Click to Chat

1800-1023-196

+91-120-4616500

CART 0

• 0

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
        A balloon starts rising from the ground with an acceleration of 1.25 metre per second square a stone is released from the balloon after 10 seconds determine maximum height of the stone from the ground and time taken by the stone to reach the ground
5 months ago

Arun
22784 Points
							After 10s the upward velocity of the balloon is =( according to u+at) (1.25)(10)=12.5 m/s.Therefore, the stone will have initial upward velocity ,u= 12.5 m/s………..(1)We have taken upward direction as positive.The acceleration of the stone, after it is realesed isg=- 9.8 m/s^2………..(2)The height of the balloon at 10s is ,h=(1/2)at^2=(1/2)(1.25)(100)=62.5 m.Now, using h=ut+(1/2)gt^2, we have-40=12.5t- (1/2)(9.8)t^2. Therefore,No you can solve this

5 months ago
Khimraj
3008 Points
							 Steps:1) Initially, Initial velocity, u = 0m/s acceleration, a =1.25 m/s^2 Velocity of balloon after 10 s, v = u +at => v = 0 + 1.25 * 10 = 12.5m/s 2) Displacement of balloon in 8 s, $s = ut + \frac{1}{2} a {t}^{2} \\ = > 0 + \frac{1}{2} \times 1.25 \times {10}^{2} = 62.5m$3) After t = 8s, a stone is dropped. Initial velocity of stone at time of fall is same as that of balloon at that time :That is velocity of stone,when it is dropped is 10m/s upward. Initial velocity, u = 12.5m/sDisplacement, s = -62.5m ( - means downward) Balloon is left. Acceleration, a = -10 m/s^2 So, time taken by stone to reach the$s = ut + \frac{1}{2} a {t}^{2} \\ - 62.5 = 10t + \frac{1}{2} \times( - 12.5) \times {t}^{2} \\$ now solve for t

5 months ago
Think You Can Provide A Better Answer ?

## Other Related Questions on Mechanics

View all Questions »

### Course Features

• 101 Video Lectures
• Revision Notes
• Previous Year Papers
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Test paper with Video Solution

### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions