Recent content by nbroyle1

how does the circumference help me I am confused??

.1778m is the circumfrance

So I found that the acceleration is 1.745rad/s^2. Then I plugged it into the equation for average acceleration to find the velocity and got 6.28m/s... is this correct??

360 degrees. So then in one second I think it travels 100 degrees??

im not sure... So its traveling 2∏ in 3.6s right??

ok thanks

I meant I added it to the right side of the equation oops

In the days before compact discs and MP3 players (ancient history!), music was recorded in scratches in the surface of vinyl-coated disks called records. In a typical record player, the record rotated with a period of 3.6 s. Find the centripetal acceleration of a point on the edge of the record...

The reason I did that in part c was because I subtracted θo to the right side of the equation. I thought the initial angular displacement would be 1 since it is one radian.

A 36.5-cm diameter disk rotates with a constant angular acceleration of 2.00 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time. (a) Find the angular speed of the...

I did the equation V=Vo+at so after I plugged in the information and solved for acceleration it was 1/2. If I plug that into f=ma I get 5 but that isn't right.

yes but since the person is pushing on the lawn mower you add the vertical component of his push + mg and that gives you the normal force.

I tried that and got a=1/2. so when I plugged that into f=ma I got f=10(1/2) but the answer is incorrect. am I forgetting something or is my calculations just wrong??

A person pushes a 10.0 kg lawn mower at constant speed with a force of 82.0 N directed along the handle, which is at an angle of θ = 45.0° to the horizontal (Fig. 4-45). (b) Calculate the horizontal retarding force on the mower (c) Calculate the normal force exerted vertically upward on the...

Ok thanks yea I was just trying to solve for the wrong variable. That equation is a little new to me Ill have to remember that one.