sonicflare9
New member
- Joined
- Sep 22, 2018
- Messages
- 9
Consider a loot crate, at the top of a frictionless ramp. If the mass of the loot crate is 11.5kg and the ramp has a rise of 3m and a run of 4m, then compute the following.
a) Compute the free body diagram of the loot crate a time 0. (i.e. when the loot crate is at the top of the ramp.)
b) Compute the net force and the acceleration of the loot crate at time 0. Given the frictionless surface what do we know about the acceleration as the object moves down the ramp?
c) Consider the loot crate at it leaves the ramp and moves onto a flat surface that now has some friction. Compute the free body diagram for this situation. If the force of friction is proportional to
one quarter of the acceleration of the loot crate, calculate the new net force and acceleration at this point.
d) If we assume that the force of friction is constant after this point. How long will it take for the loot crate to stop moving?
Over a completely flat surface a thermal detonator (Star Wars) is thrown by a Wookiee (a member of the rebel alliance) towards a group of imperial stormtroopers. The thermal detonator always leaves the Wookiee’s hand with a speed of 100m/s and the thermal detonator has a mass of 3.2kg.
a) Suppose that the Stormtroopers are 500m away. What is the correct angle for the Wookiee to throw the thermal detonator so that it reaches the Stormtroopers.
b) What is the maximum distance the thermal detonator could travel?
c) If we know that there is an average wind force of 0.4N in the positive horizontal direction, then redo the above calculations taking into account this added force
3. Consider R2D2 (a droid) with mass 30kg riding on a Ferris wheel with diameter 25m, with a velocity of 2.8m/s.
a) Compute the free body diagram for R2D2 at the exact top, exact bottom and at both horizontal positions. Remember to include gravity. (Note: The forces act in different directions relative to the acceleration of the Ferris wheel. Where does the extra acceleration go?)
b) Give the net force and acceleration at each of these points. State any patterns that you see.
c) Give a set of equations for the general circular motion in gravity problem if we consider mass m, diameter d and velocity v.
any help is welcome
a) Compute the free body diagram of the loot crate a time 0. (i.e. when the loot crate is at the top of the ramp.)
b) Compute the net force and the acceleration of the loot crate at time 0. Given the frictionless surface what do we know about the acceleration as the object moves down the ramp?
c) Consider the loot crate at it leaves the ramp and moves onto a flat surface that now has some friction. Compute the free body diagram for this situation. If the force of friction is proportional to
one quarter of the acceleration of the loot crate, calculate the new net force and acceleration at this point.
d) If we assume that the force of friction is constant after this point. How long will it take for the loot crate to stop moving?
Over a completely flat surface a thermal detonator (Star Wars) is thrown by a Wookiee (a member of the rebel alliance) towards a group of imperial stormtroopers. The thermal detonator always leaves the Wookiee’s hand with a speed of 100m/s and the thermal detonator has a mass of 3.2kg.
a) Suppose that the Stormtroopers are 500m away. What is the correct angle for the Wookiee to throw the thermal detonator so that it reaches the Stormtroopers.
b) What is the maximum distance the thermal detonator could travel?
c) If we know that there is an average wind force of 0.4N in the positive horizontal direction, then redo the above calculations taking into account this added force
3. Consider R2D2 (a droid) with mass 30kg riding on a Ferris wheel with diameter 25m, with a velocity of 2.8m/s.
a) Compute the free body diagram for R2D2 at the exact top, exact bottom and at both horizontal positions. Remember to include gravity. (Note: The forces act in different directions relative to the acceleration of the Ferris wheel. Where does the extra acceleration go?)
b) Give the net force and acceleration at each of these points. State any patterns that you see.
c) Give a set of equations for the general circular motion in gravity problem if we consider mass m, diameter d and velocity v.
any help is welcome