Question

The platform height for Olympic divers is 10 m. A 60 kg diver steps off the platform to begin her dive. a. How much gravitati
0 0
Add a comment Improve this question Transcribed image text
Answer #1

here,

the initial height of plateform , h0 = 10 m

mass of diver , m = 60 kg

a)

the gravitational potential energy doe the diver have , PE0 = m * g * h0

PE0 = 60 * 9.81 * 10 J = 5886 J

b)

when it strikes the water

using conservation of mechanical energy

the kinetic energy of the diver , KE = PE0 = 5886 J

c)

using Work energy theorm

the work done by water to stop , W = change in kinetic energy

W = ( 0 - KE) = - 5886 J

d)

let the net force applied on the diver be F

W = F * s * cos(180)

- 5886= F * 2.5 * cos(180)

F = 2354.4 N

the net force applied on the diver is 2354.4 N

Add a comment
Know the answer?
Add Answer to:
The platform height for Olympic divers is 10 m. A 60 kg diver steps off the...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • An Olympic diver is on a diving platform 9.6m above the water. To start her dive,...

    An Olympic diver is on a diving platform 9.6m above the water. To start her dive, she runs off the platform with a speed of 1.2 m/s in the horizontal direction. What is the divers speed, in m/s, just before she enters the water.

  • 5. An Olympic high diver is launching off the diving board at a height of 2...

    5. An Olympic high diver is launching off the diving board at a height of 2 meters measured off the surface of the water. At this moment of the diver's launch, the diver is momentarily at rest and the spring in the diving board is fully compressed by 50cm from its natural length. The spring in the springboard has a spring constant of 170N/m. The diver has a mass of 85kg. a. What is the gravitational potential energy of the...

  • A person with mass mo drops from a diving platform into the pool ho meters below...

    A person with mass mo drops from a diving platform into the pool ho meters below hat is the diver's gravitational potential energy when standing atop the platform? b. How much kinetic energy does the diver possess at impact? What is the diver's velocity vo at impact? d. What about a diver with mass m, -2mo? - what will their velocity v, be at impact? e. What if the diver with mass mo dives from a platform h-2ho meters -...

  • A 70 kg diver steps off of a 12 m tower and hits the water below....

    A 70 kg diver steps off of a 12 m tower and hits the water below. He travels 2.2 m below the surface before coming to a stop. Find the average force of resistance produced by the water? We have not learned anything about PE and KE yet, only linear, projectile, and force math, how is this doable with only those?

  • 5. A 65.0-kg woman steps off a 10.0-m diving platform and drops straight down into the...

    5. A 65.0-kg woman steps off a 10.0-m diving platform and drops straight down into the water. After entering the water she continues falling through the water until she reaches a depth of 4.00 m. a. Calculate the work done on the woman by gravity and by the water. Ignore air resistance. b. What is the average net force exerted on her over this 4.00-m displacement in the water? c. How does the average net force exerted on the woman...

  • Please explain steps: An 80 kg swimmer steps off a platform 10 m above the water...

    Please explain steps: An 80 kg swimmer steps off a platform 10 m above the water and free-falls downward. Once she enters the water, drag forces take over and bring her to rest in 3.0 s (after her feet first touch water). (a)Assuming that the drag force is constant, find this force. (b) Find her depth under the water when she comes to rest.

  • An 80 kg swimmer steps off a platform 10 m above the waterand free-fallsdownward. Onceshe entersthe...

    An 80 kg swimmer steps off a platform 10 m above the waterand free-fallsdownward. Onceshe entersthe water, drag forcestake over andbring her to rest in 3.0 s (after her feet first touch water). (a) Assuming that the drag force is constant, find this force. (b) Find her depth under the water when she comes to rest.

  • Please solve 1D and 2 DEF. 1. A 20.0 kg box is pulled up an inclined...

    Please solve 1D and 2 DEF. 1. A 20.0 kg box is pulled up an inclined ramp by a rope with tension of 150.0 N. The incline makes an angle of 30.0 above the horizontal. The rope is parallel to the ramp. There is a kinetic friction force of 30.0 N a. Draw a free body diagram of the box, listing all forces acting on the box. b. Find the work done by each force on the box. c. Find...

  • (3) A professional diver jumps (up) off of a cliff that is 18 m high. Draw...

    (3) A professional diver jumps (up) off of a cliff that is 18 m high. Draw a sketch of the cliff, defining your origin and final position. (Careful with negative and positive signs.) Unlike the WB ssignment, assume the diver jumps up first and has an initial vertical velocity is 2.5 m/s. (Ignore air resistance.) (a) How long does it take the diver to hit the water? (b) How high from the top of the cliff does the diver reach...

  • An object 5 m off the ground has a mass of 22 kg . If it...

    An object 5 m off the ground has a mass of 22 kg . If it has a gravitation potential energy of 800J, what is the gravitational acceleration of the planet? Kinematics, Conservation of Energy, Kinematics Energy or Gravitational Potential Ennergy? A kart has a KE of 210J. If friction does -80J of work on it, how much KE does the kart have after friction acts on it? And how do you determine the KE? Kinematics, kinetic energy, work-energy theorem,...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT