Announcements Posted on
Take our survey to be in with the chance of winning a £50 Amazon voucher or one of 5 x £10 Amazon vouchers 28-05-2016
1. hi,
can anyone help me with this adv higher physics mechanics problem-
Calculate the speed required to to increase a protons rest mass by 50%?

2. You need to use the equation for relativistic mass.

As you want the rest mass to increase by 50%, you need to replace the left hand side of the equation with 1.5m0. Sub in rest mass of a proton into m0 and then just do algebra to get v.
3. i dont know how to get v
4. (Original post by CallumFR)
You need to use the equation for relativistic mass.

As you want the rest mass to increase by 50%, you need to replace the left hand side of the equation with 1.5m. Sub in rest mass of a proton into m0 and then just do algebra to get v.

how do i get v?
5. (Original post by nav man)
how do i get v?
You can simplify the equation by cancelling m0 on either side (so actually, there's no need to sub in the rest mass)

Square both sides

and then just do the maths on a calculator
6. thanks a lot man, that was a big help. +rep
7. Did you do higher maths? If not then generally you should look over the course, ah physics has some higher maths in it and especially in things like rearranging equations (like above) it is very useful.

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: September 1, 2009
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

### Don't be a half-term hermit

How to revise this week and still have a life

### Subjects you're happy to never do again

Poll
Applying to university