Top answers

What is the difference between the centripetal acceleration and the centrifugal force?

The centripetal acceleration is the acceleration a body experiences in centripetal motion (moving in a circle or along an arc). Centripetal acceleration always points towards the centre of the circle, hence ...
LL
Answered by Luca L. • Physics tutor
22737 Views

What's the value of the normal force of a vehicle on a convex bridge? What about a concave one?

For a vechicle placed on a convex bridge: N=mg-F cf. For a vehicle placed on a concave bridge: N=mg+F cf. Where mg is the gravitational force and F cf is the centrifugal force.
DM
Answered by Dan M. • Physics tutor
2878 Views

Could you please explain how does a general pulley system work and how I can solve problems associated with those?

Pulley systems allow for force transmission from one body to another or more. Intelligent pulley systems can be used to apply more force to a body of interest than that generated (by any power system or othe...
LR
Answered by Luca R. • Physics tutor
2183 Views

How much velocity should a small toy rocket, weighing 10kg, acquire in order to escape the Earth's gravitational field? (Neglect any type of friction with the atmosphere)

Here, by equating the formula for the kinetic energy of the rocket to the gravitational potential energy, the student would realize after deriving the speed, that the its mass vanishes, therefore making the ...
AG
2278 Views

Outline why a given mass of water has more internal energy than the same mass of ice at the same pressure?

To achieve maximum score, you are expected to define every term that you will use. Therefore in this case define internal energy (the sum of the potential and the (random) kinetic energy of the molecules of ...
BP
Answered by Balint P. • Physics tutor
3194 Views