Ramya and Vijay are bicycling in their backyard while their Dad is trimming bushes using a pair of shears. Their Mom is collecting the fallen leaves and other garbage using a garden-rake and then finally transfers them into a wheelbarrow. Meanwhile, in the kitchen, their Grandma is cracking some walnuts using a nutcracker for their evening snack.
- Identify and list the simple machines present in the scene.
- Identify and briefly explain which ones are levers in them.
- Identify the class which each of the levers belong to.