Ecercises 4 ESO Forces

1. Graph and order these forces by thir magnitude(-3i, 4j), (2i,8j), (-7j), (5i), (8i, -6j)
2. A R=10m ferries turns at 0.25Hz. Determine the aparent weight of a 50kg teenager when:a) he is at its bottom b)he is at its top. Draw the forces diagram
3. A bicycle rider tries to make a 15m radious looping. Which is the minimal speed he must have at the top? Draw the forces diagram
4. A horizontal spring with k=5000N/m is lengthened 10cm and then attached to a 25kg stone. If the friction quotient is 0,4 What will be the total force over the stone and the acceleration?. Draw the forces diagram