AonZ 2 years ago Pls i never get help for physics :P What is the force with which the ground pushes the 50kg mass?

1. AonZ

|dw:1363676611270:dw|

2. AonZ

i worked out acceleration is 1.53ms^-2 left and Force is 76.6N

3. .Sam.

|dw:1363679086031:dw|

4. .Sam.

w=50(9.81)=490.5N $\sum F_y=0 \\ \\ n+Fsin(40)-w=0 \\ \\ n=490.5-100\sin(40) \\ \\ n=426N$

5. .Sam.

they are saying " the force with which the ground pushes the 50kg mass" so the force which you're gonna find is the normal force

6. AonZ

thank you :)