So first make a force diagram. I would label forward forces + and backward forces -. Essentially, the drag force is equal to the Ft (force of tension) + Ff (force of friction on snowmobile - driver system). The force of Friction is equal to mu * Fn. We can find mu through the force of friction acting on the sled. 120 N = mu * Fn (equal to m * g of sled). mu of the Ice is equal to 0.167. So, 540 N = Ft + 0.167 * 4500 N. Ft = -211.5 N. <u>Ft is acting in the backwards direction at a magnitude of 211.5 N</u>
Work done = force * distance
2m * 9.8
work done = 19.6 J
For example, an internal combustion engine converts<span> the </span>potential<span> chemical </span>energy <span>in gasoline and oxygen into </span>thermal energy<span> which, by causing pressure and performing work on the pistons, is </span>transformed<span> into the mechanical </span>energy<span> that accelerates the vehicle (increasing its kinetic </span>energy<span>).</span><span />
Answer:
A beat with the frequency of 10Hz.
Explanation:
The frequencies from the tuning fork and guitar will cancel each other.
The frequency of tuning fork = 340Hz
The frequency of guitar string= 350Hz
The offset = 350Hz - 340Hz = 10Hz
A 10Hz frequency sound is still heard.
