Toy Train Example - Sandy, Benjamin, Ning Zhe, Genieve

Hot air balloon- Esther, Han Kang, Joanna, Ryan

Hot air balloon - priscilla, qian ning, yelun, jiahe

Hot air balloon - Zhu Yin, Kai Wei, Jia Yi

hot air balloon example

charissa, kaining, fangci, joe

Hot Air Balloon example - Heng Yee, Jing Han, Jason, Poh Zheng, Shi Heng

Hot Air Balloon Example- Sandy, Genieve, Benjamin, Ning Zhe

Hot air balloon example

-Jing Qi, Geraldine, Jun Wei, Keng Wen

Lift example - Zhu Yin, Kai Wei, Jia Yi, Sean

Lift example - Gloria, Alicia, Yong Hoe, Jun yang, Boon Jian

Lift example- priscilla, qian ning, yelun, jiahe

Lift example- Han Kang, Jason, Ryan, Joanna

Due to time constraints, we could only do part a and b.

PART A and B respectively:

Lift Example

Questions a and b are incorrect as we did not include the force exerted by the cables to make the velocity constant (acceleration=0ms^-2). We were in the midst of a heated discussion over c and d as our original results contradicted with the fact that when the lift is moving downwards (for c), we feel as if we are "floating" so our weight is supposed to be lesser and vice versa (for d).

Lift example

We only did question one and two! So sorry we didn't have time to do part c!

Done by: Kow Ningzhe, Sandy Lee, Geraldine Tan, Benjamin Chun 

Lift examples part a, b & c: Charissa, Kaining, Fangci, Joe

For a & b, ignore the free body diagram for at the start since the scenario starts from when it is already moving.

For every part, take upwards as positive, m=20.0kg, acceleration due to gravity = -10ms^-2, F refers to the weight of the person and the dot in the free body diagram represents the whole lift. For both FBDs of parts a & b, F1 refers to the force exerted by the cable, and F2 represents the weight of the whole lift including the person and the weighing scale.

We have not done part d yet.

part a:

part b:

part c: