9. You are riding your bike and the brakes fail and the only way to stop...
9. You are riding your bike and the brakes fail and the only way to stop before you end up over scenic drive is to use your leg and apply a torque to the tire to stop it in 2.0s. What torque is necessary to stop the bike if the tires radius is 0.33 with a mass of 1.5 kg and rotating at 98.7 rad/s?
10. They made some improvements to the new hover disk that exploded on you once before. It rotates at the rate of 0.30 rad/s and you are standing on it 2.0m from the axis of rotation. What is the new angular speed when you walk to a point 1.0 m from the center? Assume your mass is 80kg and the disc you are on is a solid 6.50 X 10^2kg cylinder with a radius of 2.00 m.
Homework Answers
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9. You are riding your bike and the brakes fail and the only way
to stop...
1) You are riding a bike at a speed of 4.3 m/s. You apply the rear...
1) You are riding a bike at a speed of 4.3 m/s. You apply the rear brakes and come to a stop in 4 seconds. The moment of inertia of the rear bike wheel is 0.15 kg.m', and its radius is 0.33 m. If the rear wheel is rolling without slipping, what was the average torque exerted on it during the 4 seconds that you applied the brakes? (7 points)
You come to a complete stop by using the brakes to apply enough torque to decrease...
You come to a complete stop by using the brakes to apply enough torque to decrease the angular velocity of the bike's tires at a rate of -3.3 rad/s^2 over a period of 2.7s. If you have 0.75m diameter tires, how far do you and the bike travel before stopping?
PHY 121 Homework 12 Due: Thursday, November 21st Physics 121 Homework 12 1) You are riding...
PHY 121 Homework 12 Due: Thursday, November 21st Physics 121 Homework 12 1) You are riding a bike at a speed of 4.3 m/s. You apply the rear brakes and come to a stop in 4 seconds. The moment of inertia of the rear bike wheel is 0.15 kg. m², and its radius is 0.33 m. If the rear wheel is rolling without slipping, what was the average torque exerted on it during the 4 seconds that you applied the...
PHY 121 Homework 12 Due: Thursday, November 21" Physics 121 Homework 12 1) You are riding a bike at a speed of 4.3...
PHY 121 Homework 12 Due: Thursday, November 21" Physics 121 Homework 12 1) You are riding a bike at a speed of 4.3 m/s. You apply the rear brakes and come to a stop in 4 seconds. The moment of inertia of the rear bike wheel is 0.15 kg.m', and its radius is 0.33 m. If the rear wheel is rolling without slipping, what was the average torque exerted on it during the 4 seconds that you applied the brakes?...
Question 1 (10 marks) A 75 kg cyclist is riding a 9 kg road bike on...
Question 1 (10 marks) A 75 kg cyclist is riding a 9 kg road bike on flat ground at a constant Velocity of 8 m/s. The cyclist is using a power meter, which indicates that the cyclist's power output is 216 W. a) draw the FBD & KD for the cyclist (2 marks) b) use your FBD/KD to solve for the drag force that is acting on the cyclist for the conditions above (2 mark if the cyclist now wants...
. On your way to your first stop, the Moon, you do the standard tourist things:...
.
On your way to your first stop, the Moon, you do the standard
tourist things: First, you check out your what your weight will be
on the Moon. Please don’t look up lunar gravity. Calculate it
instead from the values given above. Show all formulas used and
calculations below.
Weight on Earth (lbs.) : 600N or 132lb
Weight on Moon (lbs.):
Everyone loves to jump on the moon! So how high will you be able
to jump? try jumping...
1) You are riding a bike at a speed of 4.3 m/s. You apply the rear brakes and come to a stop in 4 seconds. The moment of inertia of the rear bike wheel is 0.15 kg.m', and its radius is 0.33 m. If the rear wheel is rolling without slipping, what was the average torque exerted on it during the 4 seconds that you applied the brakes? (7 points)
PHY 121 Homework 12 Due: Thursday, November 21st Physics 121 Homework 12 1) You are riding a bike at a speed of 4.3 m/s. You apply the rear brakes and come to a stop in 4 seconds. The moment of inertia of the rear bike wheel is 0.15 kg. m², and its radius is 0.33 m. If the rear wheel is rolling without slipping, what was the average torque exerted on it during the 4 seconds that you applied the...
PHY 121 Homework 12 Due: Thursday, November 21" Physics 121 Homework 12 1) You are riding a bike at a speed of 4.3 m/s. You apply the rear brakes and come to a stop in 4 seconds. The moment of inertia of the rear bike wheel is 0.15 kg.m', and its radius is 0.33 m. If the rear wheel is rolling without slipping, what was the average torque exerted on it during the 4 seconds that you applied the brakes?...
Question 1 (10 marks) A 75 kg cyclist is riding a 9 kg road bike on flat ground at a constant Velocity of 8 m/s. The cyclist is using a power meter, which indicates that the cyclist's power output is 216 W. a) draw the FBD & KD for the cyclist (2 marks) b) use your FBD/KD to solve for the drag force that is acting on the cyclist for the conditions above (2 mark if the cyclist now wants...
.
On your way to your first stop, the Moon, you do the standard
tourist things: First, you check out your what your weight will be
on the Moon. Please don’t look up lunar gravity. Calculate it
instead from the values given above. Show all formulas used and
calculations below.
Weight on Earth (lbs.) : 600N or 132lb
Weight on Moon (lbs.):
Everyone loves to jump on the moon! So how high will you be able
to jump? try jumping...
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