Calculating average forces on an Object

AI Thread Summary
To calculate the average force exerted by a baseball on a catcher's mitt, the mass of the ball (0.140 kg) and its initial velocity (35.0 m/s) are essential. The glove recoils backward by 11.0 cm, indicating a change in momentum that can be analyzed using kinematic equations. The discussion emphasizes the need to determine acceleration, which can be calculated using the SUVAT equations. Participants highlight the importance of understanding the relationship between force, mass, and acceleration in this context. Overall, the thread guides users toward applying physics principles to solve the problem effectively.
JustynSC
Messages
17
Reaction score
0

Homework Statement


A 0.140kg baseball traveling 35.0 m/s strikes the catcher's mitt, which in bringing the ball to rest, recoils backward 11.0cm. What is the average force applied by the ball on the glove

Homework Equations


F=ma; FAB=-FBA

The Attempt at a Solution


Not sure where to start for this one

Mod Edit: missing velocity value added to problem statement after it was supplied by the OP.
 
Last edited by a moderator:
Physics news on Phys.org
For starters you need to supply the initial velocity. It looks like it got lost between your fingers and the keyboard.

By the forum rules you need to make some attempt. What kinematic facts about the ball's motion can you derive from the given information?
 
Oops. Yes the initial velocity is equal to 35.0m/s
My frist attempt would have been a free body diagram depicting a ball traveling at the suggested speed coming in contact with the glove (or any object that acts against the ball's velocity. This in turn means there must be an opposing force (acceleration in the opposite direction of the ball's travel.) But since I don't know the acceleration, (or the time interval it took for the velocity to reach )m/s from 35m/s. how can I calculate that piece of information?
 
JustynSC said:
Oops. Yes the initial velocity is equal to 35.0m/s
My frist attempt would have been a free body diagram depicting a ball traveling at the suggested speed coming in contact with the glove (or any object that acts against the ball's velocity. This in turn means there must be an opposing force (acceleration in the opposite direction of the ball's travel.) But since I don't know the acceleration, (or the time interval it took for the velocity to reach )m/s from 35m/s. how can I calculate that piece of information?
Make a list of the SUVAT equations (look it up) and keep it handy. There is enough information given to find the acceleration if you choose the right equation from the list.
 
Hey thanks for that I have never heard of the phrase SUVAT equations. This was greatly helpful!
 

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 'Collision of a bullet on a rod-string system: query'

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
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

Applied force of a ball on a glove
Replies
8
Views
3K
Newton's 2nd Law: Why is Resistance Considered a Positive Force?
Replies
3
Views
2K
Two forces acting on an object given in vectors - SOLVED
Replies
1
Views
1K
Rank forces according to magnitude: Newton's 2nd/3rd laws
Replies
5
Views
7K
Why doesn't Newtons third law also apply to the frame?
Replies
2
Views
2K
Newton's law problem: Helicopter lifting a box with a rope
Replies
5
Views
3K
How to calculate average force?
Replies
1
Views
3K
Average force applied by baseball on glove
Replies
3
Views
42K
Calculating Theoretical Reaction Force of Ball Traveling in Semi-Circle
Replies
43
Views
4K
The average force needed to throw a baseball 90mph?
Replies
5
Views
5K

Hot Threads

Recent Insights

Back
Top