Calculate force with speed and mass....

AI Thread Summary
Calculating force in Newtons requires more than just speed and distance; the time of contact between the hand and the ball is also essential. The discussion focuses on estimating the force exerted by a hand on a 3kg ball. Basic kinematics can help determine acceleration if the distance traveled by the hand is known. Without the time parameter, the calculation remains incomplete. Understanding impulse is crucial for accurate force estimation.
Roderich Chenxu
Messages
2
Reaction score
0
Hi forumners, is it possible to calculate force in Newtons given speed and distance? Or if I have to, I would say the ball weighs approximately 3kg?

Capture_2017_01_17_21_56_09.jpg


Thank you in advance.
 
Physics news on Phys.org
Your question is vague. Calculate the force of WHAT?

Zz.
 
Hi ZapperZ, calculating on the force of hand acting on the ball. Is this information enough?
 
Roderich Chenxu said:
Hi ZapperZ, calculating on the force of hand acting on the ball. Is this information enough?

Yes and no. We now know what force to estimate, but if you look at the concept of "Impulse", you'll notice that another parameter needs to be known: the time that the ball is in contact with the hand while it is being pushed. Either this is known, or it needs to be estimated.

Although, I suppose if we apply basic kinematics, we will be able to find the acceleration, given the distance traveled by the hand.

Zz.
 
Hi there, im studying nanoscience at the university in Basel. Today I looked at the topic of intertial and non-inertial reference frames and the existence of fictitious forces. I understand that you call forces real in physics if they appear in interplay. Meaning that a force is real when there is the "actio" partner to the "reactio" partner. If this condition is not satisfied the force is not real. I also understand that if you specifically look at non-inertial reference frames you can...
I have recently been really interested in the derivation of Hamiltons Principle. On my research I found that with the term ##m \cdot \frac{d}{dt} (\frac{dr}{dt} \cdot \delta r) = 0## (1) one may derivate ##\delta \int (T - V) dt = 0## (2). The derivation itself I understood quiet good, but what I don't understand is where the equation (1) came from, because in my research it was just given and not derived from anywhere. Does anybody know where (1) comes from or why from it the...
Back
Top