Angular momentum; flying motorcycle

AI Thread Summary
The discussion focuses on calculating the horizontal acceleration needed for a motorcycle's front wheel to lift off the ground, given specific dimensions and conditions. The center of mass is located 88.0 cm above the ground and halfway between the wheels, with the distance between the wheel centers being 155 cm. Participants discuss using torque equations, specifically Στ = Iα and τ = r x F, to analyze the forces acting on the motorcycle. One user suggests placing the axis of rotation at the rear wheel's contact point to simplify calculations. Ultimately, the user reports finding the solution after considering the forces at play.
MrRice5555
Messages
4
Reaction score
0

Homework Statement


The distance between the centers of the wheels of a motorcycle is 155 cm. The center of mass of the motorcycle, including the biker, is 88.0 cm above the ground and halfway between the wheels. Assume the mass of each wheel is small compared with the body of the motorcycle. The engine drives the rear wheel only. What horizontal acceleration of the motorcycle will make the front wheel rise off the ground?

Homework Equations


\Sigma \tau= I \alpha
\tau = r x F

The Attempt at a Solution


I don't know how to even start this. I drew a diagram, and tried to sum the torques by placing the axis of rotation at the center of the rear wheel. Have no idea what to do from there.
 
Physics news on Phys.org
Try putting your center of rotation at the point where the rear wheel touches the ground. What are the forces acting on the center of gravity?
 
OH I see there's a force applied from the engine as well as the weight of the engine. I believe I got the answer. Thanks!
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Motorcycle horizontal acceleration-front wheel rise
Replies
1
Views
3K
Motorcycle Wheels: Calculating Horizontal Acceleration for Front Wheel Lift Off
Replies
1
Views
3K
Motorcycle Wheelie (Angular Momentum)
Replies
11
Views
12K
Perfectly inelastic collision of two moving and rotating disks
Replies
9
Views
2K
How Do Friction and Force Affect the Angular Velocity of Connected Wheels?
Replies
19
Views
3K
How to find the normal force of a car jack lifting a car
Replies
7
Views
4K
Brake mechanism in a car and pressurised oil
Replies
4
Views
2K
Final velocity of the barbell dropped after a dead lift
Replies
7
Views
847
Solving acceleration of a car with torques
Replies
12
Views
2K
Front flip of a bike. Conserving Angular Momentum.
Replies
3
Views
2K

Hot Threads

Recent Insights

Back
Top